This single-stage power valve provides standard fuel enrichment on demand, opening at 10.5 in. Hg of manifold vacuum for engine combinations that need extra fuel sooner under load.
Specifications:
- Category: Air and Fuel Delivery / Carburetion
- Product Type: Power Valve, Single-Stage Standard Flow
- Opening Vacuum: 10.5 in. Hg
- Gasket Included: Yes
- Warning: California Proposition 65
- Warranty: Manufacturer's Limited 90 Day Warranty
- Part Number: 125-105
FAQ
What does the "opening vacuum" rating mean?
It's the intake manifold vacuum level, in inches of Hg, at which the power valve opens to add fuel enrichment under load.
Is a gasket included?
Yes, this power valve includes a gasket for installation.
What's the difference between Standard Flow and High Flow power valves?
Standard Flow power valves are calibrated for typical street engine combinations, while High Flow versions add more fuel enrichment at the same vacuum opening point for higher-demand combinations.
How do I choose the right opening vacuum rating?
Select an opening vacuum roughly 1-2 in. Hg below your engine's idle vacuum reading; engines with higher idle vacuum (mild, stock-type combinations) typically use a higher-numbered valve like this one.
